Dataseries Add() is not loading the Bars Array

[dontpanic]

Hi,

In my Initialize() I have

Add(PeriodType.Minute, 5);

But the BarsArray is not being loaded.

I've been trying to identify for some time exceptions that I have been getting whilst trying to access this array that occur intermittently, but I now have a situation where the error is occurring consistently.

I put a condition in my indicator now to test for BarsArray[1].Count>0 before attempting to access the array and I have discovered that BarsArray[1].Count=0, even after executing the above Add().

In this particular situation my instrument is FDAX and I am running my indicator during market closed time, but I am certain that there are other conditions which also cause this problem.

Why would the array not be loaded? Is there something I can do to force the load?

Thanks,
will.

[NinjaTrader_PatrickH]

Hello Will,

Thank you for your post.

The Array should be loaded, where in your code are you checking the count?

[dontpanic]

Hi Patrick,

I have a timer event that is executed for the first time at 1 second after the Initialize(). In the timer event is where I check the count.

Will.

[NinjaTrader_PatrickH]

Hello dontpanic,

Thank you for your response.

Where is the timer called? If not in the OnBarUpdate() method and in the Initialize() method the bars have not loaded yet.

[dontpanic]

The timer is intialised and started in OnStartup(), which occurs after Initialize(). However, OBU() has not been called for BarsArray[1] before the first timer event (I put a debug Print() in there).

In fact it appears that OBU() is not being called at all for BarsArray[1]. As I said, in this case I am accessing a market that has no incoming data at this time, during market close, however it was my understanding that OBU() was called for every bar of historical data during startup, so I assumed that this was the case for the additional series...?

If change my instrument to GC then OBU() is called, I guess GC has incoming data right now.

But in this case for GC it appears as tho OBU() IS being called for BarsArray[1] for each bar of the historical array, as I would expect.

Now... something interesting has happened. After I loaded GC, I put my instrument back to FDAX, and now OBU() has been called for every historical bar. I saved my workspace and restarted NT, and again, OBU() is being called as I would expect.

There is still no incoming data for FDAX, so I don't know if this is related to the cause or not, but something has changed... whatever the conditions are that cause BarsArray[1] to be loaded or not loaded have changed. The question is, I think, what are those conditions?

Will.

[NinjaTrader_PatrickH]

Hello Will,

Thank you for your response.

Do you have an example I can test to investigate this matter further?

[dontpanic]

Hi Patrick, I can send you my indicator via email if thats ok?

A similar thing is happening to yesterday. I was working on this indicator this morning and it was working fine. At some point it started getting the array errors. I suspect that shortly it will start working again, I think there is a time factor involved, something to do with the way data is received from the exchange?

Will.

[dontpanic]

Hi, now I suspect its not related to time, but related to loading or reloading of data. A couple of times when I have "reload all ninjascript" it gets the error. When I swap instruments to GC, then swap back again, there is no error.

W.

[NinjaTrader_PatrickH]

Hello dontpanic,

Yes, please send to support[at]ninjatrader[dot]com with 'ATTN: Patrick - 1096579' in the subject line.

[dontpanic]

Hi, Patrick, Cal,


Yes I can do a remote session if you are around.

I now have another indicator that has a similar problem, this time its with the Times[0] dataseries and it happens consistently. I have it running in Visual Studio debug mode so hopefully that will give us some more info.

Regards,
Will.

[dontpanic]

Hi,

I'm available for a remote session for the next 24 hours. I'm in Australia EST timezone, so if you would like to make a time I can be available.

Thanks,
Will.

[NinjaTrader_PatrickH]

Hello Will,

Thank you for your response.

I will follow up with you via e-mail.